1 files changed, 1 insertions, 5 deletions

diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index dda7dff9cef..1725930a6f9 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -127,11 +127,7 @@ void dotraplinkage do_emulate_vsyscall(struct pt_regs *regs, long error_code)
 
         local_irq_enable();
 
-        /*
-         * Real 64-bit user mode code has cs == __USER_CS.  Anything else
-         * is bogus.
-         */
-        if (regs->cs != __USER_CS) {
+        if (!user_64bit_mode(regs)) {
                 /*
                  * If we trapped from kernel mode, we might as well OOPS now
                  * instead of returning to some random address and OOPSing